For homeowners, an exterior tankless gas water heater delivers endless hot water efficiently.
Exterior tankless gas water heaters, like the Rinnai RX199iN, provide reliable hot water on demand, making them ideal for modern households. With options like the Rheem RTG-70XLN-3 and Rinnai RE140eN, you can choose the perfect model that fits your needs.
From energy-efficient systems to space-saving designs, these heaters adapt seamlessly to various home setups, ensuring you enjoy hot water wherever you need it.
We detail pros, cons, and hidden perks ahead.
Rinnai RX199iN Tankless Water Heater
The Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater is designed to provide an endless supply of hot water, making it ideal for homeowners seeking efficiency and convenience. This compact unit, comparable in size to a small suitcase, caters to various users, particularly those with moderate to large households that require a reliable hot water source for multiple fixtures simultaneously. With a capacity of up to 11.1 gallons per minute (GPM) and a powerful output of 199,000 BTUs, this water heater is perfect for families or individuals who value consistent hot water availability.
Key specifications include its versatile installation options, allowing for both indoor and outdoor settings. The unit is powered by either propane or natural gas and features a modern design with an easy-to-use interface. Its high energy efficiency rating of UEF .98 ensures significant savings on energy bills, making it an environmentally friendly choice.
The Rinnai RX199iN effectively addresses the common problem of running out of hot water during high-demand situations. Its compact design not only saves space but also enhances the user experience by providing hot water on demand without the need for bulky storage tanks.
Pros
- Endless hot water supply for multiple fixtures.
- Compact size saves space compared to traditional water heaters.
- High energy efficiency reduces utility costs.
- Versatile installation options (indoor or outdoor).
- Smart control capabilities with optional WiFi integration.
Cons
- Professional installation is recommended, which may incur additional costs.
- Initial price point may be higher than traditional water heaters.
- WiFi control module sold separately.
In terms of performance, the Rinnai RX199iN stands out with its Quick Flush feature, simplifying maintenance and ensuring optimal operation over time. While the unit is best suited for medium to large households, those with smaller water needs may find it excessive. However, the benefits of consistent hot water and energy savings far outweigh any minor drawbacks.
This water heater is an excellent investment for anyone seeking a reliable, efficient, and modern solution for their hot water needs, making it a top choice in the tankless water heater market.
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Rheem High Efficiency Outdoor Tankless Water Heater
The Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater is designed to provide a continuous supply of hot water for residential use, making it ideal for homeowners who require hot water for multiple applications simultaneously. This model delivers an impressive 7.0 gallons per minute (GPM), ensuring that you can run a shower, dishwasher, and washing machine without running out of hot water. Its compact size, available in a sleek gray finish, measures significantly smaller than previous models, allowing for easy installation in tight spaces.
This tankless water heater addresses the common problem of inadequate hot water supply, particularly during peak usage times. By heating water on demand, it not only enhances convenience but also significantly reduces energy costs, as it only operates when hot water is needed. The Rheem RTG-70XLN-3 also features a water-saving setting that can save up to 1,100 gallons of water annually, making it an environmentally friendly choice.
Pros
- Continuous hot water supply, ideal for large households.
- Energy-efficient operation reduces utility bills.
- Compact design saves space compared to traditional water heaters.
- Water-saving setting contributes to environmental conservation.
- Hot-start programming prevents cold-water bursts.
Cons
- Initial installation cost can be higher than conventional heaters.
- Requires natural gas connection, limiting installation options.
- May not be suitable for very small homes with minimal hot water needs.
In terms of performance, the Rheem RTG-70XLN-3 stands out with its ability to maintain consistent water temperatures even under heavy demand. Its hot-start programming feature ensures that you won’t experience sudden cold water interruptions, enhancing overall comfort. This model is best suited for families or individuals who frequently use multiple hot water sources simultaneously, such as during showering, laundry, and dishwashing.
Overall, the Rheem RTG-70XLN-3 offers exceptional value for homeowners seeking an efficient, reliable, and space-saving solution for their hot water needs. With its advanced features and energy-saving capabilities, it is an excellent investment for those looking to improve their household’s hot water experience.
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Rinnai RE140eN Outdoor Tankless Water Heater
The Rinnai RE140eN Non-Condensing Natural Gas Tankless Water Heater is designed to provide an endless supply of hot water, ideal for homeowners seeking efficiency and reliability. This compact unit, comparable in size to a small suitcase, delivers up to 5.3 gallons per minute (GPM), making it suitable for households with multiple fixtures in use simultaneously. Its durable design and advanced features ensure that you never run out of hot water, enhancing your daily comfort.
Key specifications of the Rinnai RE140eN include an impressive heating capacity of 140,000 BTU, outdoor installation, and a smart design that optimizes energy usage. The unit’s compact dimensions allow it to fit in various spaces, making it an excellent choice for homes with limited installation options. The LED screen provides service reminders and error codes, simplifying maintenance and troubleshooting.
This tankless water heater resolves the common problem of running out of hot water, particularly during peak usage times. By heating water only when needed, it conserves energy and reduces utility bills. Homeowners can enjoy long, hot showers or simultaneous use of multiple appliances without concern.
Pros
- Endless hot water supply for multiple fixtures.
- Energy-efficient operation saves on utility costs.
- Compact design fits in small spaces.
- Durable construction with extensive warranties.
- LED display for easy monitoring and maintenance.
Cons
- Professional installation recommended, adding to initial costs.
- Requires outdoor installation, limiting placement options.
- WiFi control module sold separately.
Performance-wise, the Rinnai RE140eN stands out for its ability to heat water on demand, eliminating the need for a bulky storage tank. Its design is not only user-friendly but also enhances serviceability, making it a practical choice for homeowners. While the requirement for professional installation may deter some, the long-term benefits of efficiency and reliability outweigh this initial drawback.
Overall, the Rinnai RE140eN Non-Condensing Natural Gas Tankless Water Heater is an excellent investment for families or individuals who prioritize hot water availability and energy savings. Its smart design and robust performance make it a top choice for modern households.
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Ranein 2025 GEN II Natural Gas Tankless Water Heater
The 2025 GEN II Ranein Natural Gas Tankless Water Heater is designed to provide instant hot water on demand, making it ideal for outdoor use in residential settings. This product caters to homeowners needing efficient hot water solutions for multiple taps, such as showers, kitchens, and outdoor bars. With a maximum flow rate of 5.3 GPM and a heating capacity of 130,000 BTU, it ensures a steady supply of hot water for various household needs.
Key specifications include its compact design, which allows for easy wall mounting in outdoor spaces, and the use of high-quality materials like an internal oxygen-free copper tank that minimizes heat loss. This feature not only enhances performance but also contributes to energy savings, making it a smart choice for eco-conscious users. The LED temperature control panel further enhances user experience by providing clear visibility of the water temperature settings.
Pros
- Efficient hot water delivery with a maximum flow rate of 5.3 GPM.
- Stable water temperature due to advanced auto-adjusting technology.
- Compact, space-saving design suitable for outdoor installation.
- Energy-efficient operation reduces utility bills.
- Powerful blower ensures safety by preventing smoke backflow.
Cons
- Not recommended for elevations above 2,000 feet.
- Requires outdoor installation, limiting placement options.
- Initial investment may be higher than traditional tank water heaters.
The 2025 GEN II Ranein Natural Gas Tankless Water Heater excels in performance with its ability to deliver consistent hot water while minimizing energy waste. Its standout features, including a powerful blower and compact design, make it an excellent choice for outdoor installations. Best suited for homeowners with outdoor taps, this heater provides a reliable solution for maintaining comfort during outdoor activities. However, potential buyers should consider its elevation limitations and installation requirements before purchase. Overall, this product offers great value for those seeking an efficient, space-saving hot water solution.
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Rinnai RE160eP Propane Tankless Water Heater
The Rinnai RE160eP Non-Condensing Propane Tankless Water Heater is designed to provide endless hot water, making it ideal for homeowners seeking efficient solutions for their hot water needs. This compact unit is perfect for residential use, especially for families or individuals who require hot water for multiple fixtures simultaneously. With a flow rate of up to 6.1 gallons per minute (GPM), it can supply hot water for up to five fixtures at once, ensuring comfort during peak usage times.
Key specifications include its compact size, comparable to a small suitcase, making it easy to install outdoors without taking up much space. The unit operates at 160,000 BTU and is constructed from durable materials designed to withstand outdoor conditions. Its sleek design not only enhances aesthetics but also improves serviceability, featuring an LED screen that provides service reminders and error codes for easy troubleshooting.
The Rinnai RE160eP addresses the common problem of running out of hot water, especially during busy mornings or family gatherings. By heating water only when necessary, it conserves energy and reduces utility costs, making it an environmentally friendly choice.
Pros
- Endless hot water supply, ideal for large households.
- Energy-efficient design saves on utility bills.
- Compact size allows for flexible outdoor installation.
- Durable construction with extensive warranties (15, 5, and 1 year).
- Smart features like LED error codes enhance usability.
Cons
- Professional installation is recommended, which may add to costs.
- WiFi control module sold separately, adding extra expense.
- Limited to outdoor installation only.
In terms of performance, the Rinnai RE160eP excels with its robust heating capabilities and energy-saving features. It is best suited for families or individuals who frequently use multiple hot water sources simultaneously. While the need for professional installation may pose a minor inconvenience, the long-term benefits of efficiency and reliability outweigh this drawback. Overall, the Rinnai RE160eP Non-Condensing Propane Tankless Water Heater offers excellent value for those seeking a dependable and efficient hot water solution.
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Faq about Exterior Tankless Gas Water Heater:
1:What is an exterior tankless gas water heater?
An exterior tankless gas water heater heats water on demand, providing a continuous supply without the need for a storage tank.
2:What are the benefits of using an exterior tankless gas water heater?
Benefits include energy efficiency, space savings, reduced water heating costs, and a longer lifespan compared to traditional water heaters.
3:How does an exterior tankless gas water heater work?
It activates when a hot water tap is opened, using gas burners to heat water as it flows through the unit, delivering hot water instantly.
4:What size exterior tankless gas water heater do I need?
The size depends on your household’s hot water demand. Consider factors like the number of appliances and simultaneous usage.
5:Can I install an exterior tankless gas water heater myself?
While DIY installation is possible, professional installation is recommended for safety and compliance with local codes.
6:How do I maintain my exterior tankless gas water heater?
Regular maintenance includes descaling to prevent mineral buildup and checking gas connections for leaks.
7:Are exterior tankless gas water heaters energy efficient?
Yes, they are more energy-efficient than traditional systems, often providing savings on utility bills.
Conclusion
The Rinnai RX199iN exemplifies superior engineering, delivering consistent hot water on demand while optimizing energy efficiency. Its compact design and advanced technology make it a quintessential choice for modern households seeking reliability and performance.
Conversely, the Rheem High Efficiency Outdoor Tankless Water Heater stands out for its exceptional energy conservation and user-friendly installation. With robust capabilities to meet high hot water demands, it offers an ideal solution for those prioritizing sustainability without compromising on comfort.